125021770115 has 16 divisors (see below), whose sum is σ = 166347897696. Its totient is φ = 89434348800.

The previous prime is 125021770103. The next prime is 125021770117. The reversal of 125021770115 is 511077120521.

It is not a de Polignac number, because 125021770115 - 2¹⁸ = 125021507971 is a prime.

It is a super-2 number, since 2×125021770115² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125021770117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18628802 + ... + 18635511.

It is an arithmetic number, because the mean of its divisors is an integer number (10396743606).

Almost surely, 2^125021770115 is an apocalyptic number.

125021770115 is a deficient number, since it is larger than the sum of its proper divisors (41326127581).

125021770115 is a wasteful number, since it uses less digits than its factorization.

125021770115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37264390.

The product of its (nonzero) digits is 4900, while the sum is 32.

Adding to 125021770115 its reverse (511077120521), we get a palindrome (636098890636).

The spelling of 125021770115 in words is "one hundred twenty-five billion, twenty-one million, seven hundred seventy thousand, one hundred fifteen".